Calculate the quantity of heat conducted through `2m^(2)` of a brick wall `12cm` thick in `1 hour` if the temperature on one side is `8^(@)C` and on the other side is `28^(@)C`. (Thermal conductivity of brick `=0.13Wm^(-1)K^(-1)`)

1.56 xx 10 ^(5) J of heat is conducted through a 2 m^(2) wall of 12 cm thick in one hour. Temperature difference between the two sides of the wall is 20 ^(@) C The thermal conductivity of the material of the wall is (in W m^(-1) K^(-1))

1.56 × 10^5 J of heat is conducted through is 2 m^2 wall of 12 cm thick in one hour. Temperature difference between the two sides of the wall is 20 ^@C. The thermal conductivity of the material of the wall is (in Wm ^(-1) K^(-1) )

1.56 × 10^5 J of heat is conducted through is 2 m^2 wall of 12 cm thick in one hour. Temperature difference between the two sides of the wall is 20 ^@C. The thermal conductivity of the material of the wall is (in Wm ^(-1) K^(-1) )

Calculate the rate of loss of heat through a glass window of area 1000 cm^(2) and thickness 0.4 cm when temperature inside is 37^(@)C and outside is -5^@)C . Coefficient of thermal conductivity of glass is 2.2 xx 10^(-3) cal s^(-1) cm^(-1) K^(-1) .

The quantity of heat flowing for 10 seconds through a rod of length 40 cm, area 50 cm^(2) is 200 J. If the temperature difference at the ends of the rod is 80^(@) C, then coefficient of thermal conductivity of the rod in Wm^(-1)K^(-1) is

A copper slab is 2 mm thick. It is protected by a 2 mm layer of stainless steel on both sides. The temperature on one side of this composite slab is 400^(@)C and 200^(@)C on the other side. Value of thermal conductivities are- k_(cu)=400 Wm^(-1)K^(-1) and k_(s)=16 Wm^(-1)K^(-1) (a) Just by knowing that thermal conductivity of steel is much less than copper, find (approximately) the temperature of the copper slab. (b) Plot the variation of temperature across the thickness of the composite wall.

1.56xx10^(5) heat energy is transferred through wall 2 m^(2) and 12 cm thickness in every hour. Temperature difference between two walls is 20^(@)C , the mall conductivity of material of wall is . . . .. . "Wm"^(-1)K^(-1)

If the temperature difference on the two sides of a wall increases from 100^@C to 200^@C , its thermal conductivity